Window lock and burglar alarm signal



y 1934. H. D. wmsE'rT 1,959,253

WINDOW LOCK AND BURGLAR ALARM SIGNAL Filed May 24. 1933 2 Sheets-Sheet 1' flabazlmaz' May 15, 1934. D, wlNSETT 1,959,253

WINDOW LOCK AND BURGLAR ALARM SIGNAL Filed May 24, 1935 2 Sheets-Sheet 2 17 l 2 fwd 40 29 MA- VIII/III! I 27' 30 HHWIIM 34:

w) jwomtoe fizwwzhzzma Patented May 15, 1934 PATEN oFFicE WINDOW LOCK AND BURGLAR ALARM SIGNAL Herbert D. Winsett, New York, N. Y.

Application May 24, 1983, Serial No. 672,676

8 Claims.

This invention relates to a window lock and burglar alarm signal and has for an object to provide an improved window lock and burglar alarm system which may be quickly and easily attached to any conventional window and will serve both to lock the window when desired and to actuate an alarm signal should any attempt be made to open the window while the lock is in the operative position.

A further object of this invention is to provide a quickly and easily installed combination window lock and signal which may be placed on the window by any unskilled person and which may be thereafter operated so as to leave the Window unlocked when it is desired to open the same from the inside but which may be set to lock the window and further to give an alarm or signal should the window be tampered with while in this locked position, thus calling the attention of the householder that a burglar or some unauthorized party is attempting to make an entry through the window;

A still further object of this invention is to provide a combination window lock and burglar alarm signal which may be manufactured and sold at a very reasonable price, thus providing protection to the householder at little cost.

A still further object of this invention is to provide a combination window lock and burglar alarm system which in completed form comprises a single self-contained unit which is easily applied to the operative position.

Still a further object of this invention is to provide a combined window lock and burglar alarm system which maybe quickly and easily shifted to an non-locking position as well as to a nonalarm giving position.

With the foregoing and other objects in view, as will hereinafter become apparent, this invention comprises the constructions, combinations, and arrangements of parts hereinafter set forth, claimed and illustrated in the accompanying drawings: a

Fig. 1 is a side elevation of a window showing the invention applied thereto.

Fig. 2 is a rear perspective view of the burglar alarm and lock.

Fig. 3 is an enlarged plan view of the roller and lock lever.

Fig. 4 is a transverse sectional view of the invention.

Fig. 5 is a sectional view taken approximately on the line 5'-5 of Fig. 4.

Fig. 6 is a sectional view taken on the line 6-6 of Fig. 5. r

Fig. 7 is a modification of the locking lever showing the same applied to a metal window.

There is shown at 10 the window lock and burglar alarm system constituting this invention, which is placed in the operative position by securing the same on the top of the lower window sash 11 of a window 12'. This lock and alarm signal comprises a mechanism and signal container 12 having a cover 14 and a projecting flange 15.

Secured to the inside of the container 12 is an alarm signal or bell 16 actuated by a striker 1'7, the striker 17 being actuated by a conventional clock-work mechanism 18 by being secured to an arm 19, the arm 19 being mounted on the fiat arm 31. Also mounted on arm 31 is a reciprocatory member 20 operated by the clock gear 21.

A tension spring 22 extending between an upstanding supporting frame 23 and a bifurcated arm or bar 24 serves to return the reciprocatory member 20 to the contact position against the gear 21. The arm or bar 24 is pivoted at 25 to the supporting frame 23, the arm 24 bearing against the bottom of the flat arm 31, on which is mounted the reciprocatory member 20.

As will be obvious, as long as the arm 24 is free to pivot about its pivot 25 against the spring 22, the striker 17 maybe actuated against the signal or bell 16 by means of the clock-work mechanism 18.

The clock-work mechanism 18 may be held against operation when desired by means of the manual stop 26 projecting through the side of the container 13 and adapted to be pressed against the gear 21, thus preventing its rotation. When it is desired to leave the mechanism free for operation, the manual stop 26 is pulled outwardly, removing it from contact with the gear 21.

Projecting through the side of the container 12 and journaled in a leg or foot 27 is a shaft 28, to the inner end of which is secured a cam 29 carrying a flat stop bar 30. When the shaft 28 is slightly rotated, the stop bar 30 passes out from under the edge of the bar 24, thus freeing the bar 24 for pivotal reciprocation about its pivot 25 and against the flat arm 31, pivotally supporting both the striker arm 19 and the reciprocatory member 20, thus permitting the clockwork mechanism 18 to actuate the striker 17 against the bell 16.

Outside of the container 13 a roller 32 is pinned as at 33 to the, shaft 28 and outside of the foot 27 a cam 34 having a sharp spur or tooth'35 is keyed as at 36 to the shaft 28. A key 37 is provided for winding up the clock mechanism 18.

In operation the alarm is secured to the top of'the window sash 11 as by means of screws 38 passing through the flange 15. The roller 32 is in frictional contact with the upper sash of the window 12, and if the window be opened, the roller 32 will rotate the shaft 28 and move the stop 30 from under the bar 24, thus bringing the mechanism into operation as just described. Only a slight rotation is necessary to bring the stop out from under the bar 24. This same amount of rotation of the shaft 28 will likewise rotate the cam 34 and bring the spur or tooth 35 into contact with the side of the upper window sash, preventing any further movement between the sashes of the window 12, thus locking the window against further opening and at the same time giving an alarm or signal that someone is attempting to tamper with the window.

When the householder desires to open the window himself, he presses in the manual stop 26, preventing the operation of the alarm mechanism l8 and reverses rotation of the shaft 28 about half a revolution, bringing the spur or tooth 35 on the cam 34 out of contact with the upper sash. Then, holding shaft 28 against rotation, he merely raises the window to any desired position. The stop 26 is then again withdrawn and should any attempt be made to open the window further without proper attention to the alarm mechanism, the roller 32 will again operate the shaft 28 to lock the window and release the alarm mechanism for operation.

If the sash be a steel sash instead of a conventional wood sash, then the cam 34 will be in the form of a steel roller 34' having a gear tooth 35', which will cooperate with a ratchet 40 formed in or secured to the side of the window sash.

The novel features and the operation of this device will be apparent from the foregoing description. While the device has been shown and the structure described in detail, it is obvious that this is not to be considered limited to the exact form disclosed and that any changes may be made therein within the scope of what is claimed without departing from the spirit of the invention.

Having thus described my invention, I claim:

1. A combination window lock and burglar alarm signal comprising a mounting means, an alarm mechanism on said mounting means, a shaft, a stop on said shaft adapted to releasably hold said alarm mechanism, anda roller on said X shaft to actuate the same.

hold said alarm mechanism, and-a roller on said shaft to actuate the same, said mounting means being adapted to be secured on the top of a lower window sash with said roller in contact with the upper window sash.

3. A combination window lock and burglar alarm signal comprising a mounting means, an alarm mechanism on said mounting means, a shaft, a stop on said shaft adapted to releasably hold said alarm mechanism, a roller on said shaft to actuate the same, said mounting means being adapted to be secured on the top of a lower window sash with said roller in contact with the upper window sash, and a cam on said shaft, said cam being actuated by the movement of said roller against said upper sash to jam against said upper sash and prevent further relative movement between the sashes.

4. A combination window lock and burglar alarm signal comprising a mounting means, an alarm mechanism on said mounting means, a shaft, a stop on said shaft, a roller on said shaft to actuate the same, said mounting means being adapted to be secured on the top of a lower window sash with said roller in contact with the upper window sash, a cam on said shaft, said cam being actuated by the movement of said roller against said upper sash to jam against said upper sash and prevent further relative movement between the sashes, said alarm mechanism comprising a clock-work mechanism, a signal means, and a signal striker actuated by said clock-work mechanism against said signal means, said stop secured on said shaft being adapted to be actuated into or out of engagement with said clock-work mechanism.

5. A combination window lock and burglar alarm signal comprising a mounting means, an alarm mechanism on said mounting means, a shaft, a stop on said shaft, a roller on said shaft to actuate the same, said mounting means being adapted to be secured on the top of a lower window sash with said roller in contact with the upper window sash, a cam on said shaft, said cam being actuated by the movement of said roller against said upper sash to jam against said upper sash and prevent further relative movement between the sashes, said alarm mechanism comprising a clock-work mechanism, a signal means, a signal striker actuated by said clock-work mechanism against said signal means, said stop secured on said shaft being adapted to be actuated into or out of engagement with said clockwork mechanism, and a manual stop on said mounting means for preventing operation of said clock-work mechanism.

6. A. window lock and burglar alarm signal comprising a mounting means, a window lock and alarm signal secured on said mounting means, said mounting means comprising a container, a flange projecting from said container, a shaft projecting through said container, said alarm signal being secured within said container, and means actuated by said shaft preventing or permitting operation of said alarm mechanism.

'7. A window lock and burglar alarm signal comprising a mounting means, a window lock and alarm signal secured on said mounting means, said mounting means comprising a container, a flange projecting from said container, a shaft projecting through said container, said alarm signal being secured within said container, and a roller on said shaft, said mounting means being adapted to be secured on one window sash with said roller in contact with the other window sash, whereby relative movement between said window sashes rotates said roller toset off. said alarm mechanism.

8. A window lock and burglar alarm signal comprising a mounting means, a window lock and alarm signal secured on said mounting means, said mounting means comprising a container, a

flange projecting from said container, a shaft projecting through said container, said alarm signal being secured within said container, a roller on said shaft, said mounting means being adapted to be secured on one window sash with said roller in contact with the other window sash, whereby relative movement between said window sashes rotates said roller to set off said alarm mechanism, and a tooth keyed to said shaft adapted to jam agai st a window sash and lock the same.

HERBERT D. WINSETT.

L l i-0 

